1 /* Version of sigsetmask.c 2 Written by Steve Chamberlain (sac (at) cygnus.com). 3 Contributed by Cygnus Support. 4 This file is in the public doamin. */ 5 6 /* 7 8 @deftypefn Supplemental int sigsetmask (int @var{set}) 9 10 Sets the signal mask to the one provided in @var{set} and returns 11 the old mask (which, for libiberty's implementation, will always 12 be the value @code{1}). 13 14 @end deftypefn 15 16 */ 17 18 #include <ansidecl.h> 19 /* Including <sys/types.h> seems to be needed by ISC. */ 20 #include <sys/types.h> 21 #include <signal.h> 22 23 extern void abort (void) ATTRIBUTE_NORETURN; 24 25 #ifdef SIG_SETMASK 26 int 27 sigsetmask (int set) 28 { 29 sigset_t new_sig; 30 sigset_t old_sig; 31 32 sigemptyset (&new_sig); 33 if (set != 0) { 34 abort(); /* FIXME, we don't know how to translate old mask to new */ 35 } 36 sigprocmask(SIG_SETMASK, &new_sig, &old_sig); 37 return 1; /* FIXME, we always return 1 as old value. */ 38 } 39 #endif 40
